Hydraulic rock breaker



FIG. 1—is an isometric perspective view of an embodiment thereof;

FIG. 2—is a bottom side plan view of an embodiment thereof;

FIG. 3—is a top side plan view of an embodiment thereof;

FIG. 4—is a left side elevational view of an embodiment thereof;

FIG. 5—is a front side elevational view of an embodiment thereof;

FIG. 6—is a right side elevational view of an embodiment thereof; and,

FIG. 7—is a rear side elevational view of an embodiment thereof. 

The ornamental design for a hydraulic rock breaker, as shown and described. 